VMware Update Manager failed

Problem:

When trying to enable Update Manager, you received the following error message;

There was an error connecting to VMware vCenter Update Manager <server name>:8084.  Database temporarily unavailable or has network problems.

Solution:

Update Manager is installed with a remote MS SQL database using Windows Authentication and the Update Manager Service is set to log on as a Local System Account.

To resolve this issue, change the Update Manager Service to log on to the remote database as a Windows account with Administrator privileges: 

1. Click Start > Run, type services.msc, and click OK. 
2. Right-click VMware Update Manager and click Properties. 
3. Click the Log on tab. 
4. Select This account, specify the Windows account along with the appropriate password, then click OK. 
5. Right-click VMware Update Manager and click Restart.

This should allow you to re-enable the Update Manager.